US 12,031,095 B2
Integrated thermal cracking and dehydrogenation process for olefin production
Kandasamy Meenakshi Sundaram, Old Bridge, NJ (US); and Ronald M. Venner, Bloomfield, NJ (US)
Assigned to LUMMUS TECHNOLOGY LLC, Houston, TX (US)
Filed by LUMMUS TECHNOLOGY LLC, Bloomfield, NJ (US)
Filed on Oct. 15, 2021, as Appl. No. 17/502,283.
Application 17/502,283 is a division of application No. 16/913,392, filed on Jun. 26, 2020, granted, now 11,155,759.
Application 16/913,392 is a division of application No. 16/039,193, filed on Jul. 18, 2018, granted, now 10,696,908, issued on Jun. 30, 2020.
Claims priority of provisional application 62/534,101, filed on Jul. 18, 2017.
Prior Publication US 2022/0098496 A1, Mar. 31, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 19/00 (2006.01); C07C 4/04 (2006.01); C07C 5/327 (2006.01); C10G 9/00 (2006.01); C10G 9/14 (2006.01); C10G 57/00 (2006.01)
CPC C10G 57/00 (2013.01) [B01J 19/0006 (2013.01); B01J 19/0053 (2013.01); C07C 4/04 (2013.01); C07C 5/327 (2013.01); C10G 9/002 (2013.01); C10G 9/14 (2013.01); C10G 2300/1037 (2013.01); C10G 2300/807 (2013.01); C10G 2400/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process for producing olefins and/or dienes, the process comprising:
thermally cracking, within a reaction zone, a C2-C6 hydrocarbon-containing feed to produce a cracked hydrocarbon effluent containing methane and a mixture of C2-C6 olefins and paraffins, wherein a conversion of hydrocarbons in the C2-C6 hydrocarbon containing feed is in a range from about 10 mol % to 70 mol %;
receiving an entirety of the cracked hydrocarbon effluent and contacting the cracked hydrocarbon effluent with a second C2-C6 hydrocarbon-containing feed, comprising one or more C2-C6 hydrocarbons, thereby cooling the cracked hydrocarbon effluent via direct heat exchange with the second C2-C6 hydrocarbon-containing feed, producing a cooled cracked hydrocarbon effluent;
feeding an entirety of the cooled cracked hydrocarbon effluent to a dehydrogenation reaction zone, wherein there are no componential separators intermediate the reaction zone and the dehydrogenation reaction zone; and
dehydrogenating, within the dehydrogenation reaction zone, the cooled cracked hydrocarbon effluent to produce a dehydrogenated hydrocarbon effluent containing additional olefins and/or dienes.